Right click Search Folders and select New Search Folder
In the new window that appears select Unread Mail and click OK
Or if you have Outlook 2010:
Select File from your menu bar, then go to New and select Search Folder. You can also press "CTRL," "Shift" and "P" at the same time to open the "New Search Folder" box.
Select Unread Mail under the Reading Mail section of the dialog box.
Click OK to finish restoring the Unread Mail search folder
Problem
Deleted the Unread Mail folder in OutlookSolution
Try the following If you have Outlook 2007:Or if you have Outlook 2010: